The 30-year-old striker leaves for Istanbul after five seasons with OM having played an important role in helping the southern club reclaim the Ligue 1 title last term. The Senegalese international scored 18 goals in 32 league appearances in 2009/10 and overall hit an impressive 72 in 154 French top-flight games for the Stade Vélodrome outfit.

Niang, Ligue 1's top scorer last season, signed off on a sad note, playing in his side's 3-2 loss at Valenciennes FC on Saturday. Fenerbahçe are away to PAOK FC in the first leg of their UEFA Europa League play-off next Thursday, while OM enter the UEFA Champions League at the group stage.

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